Furnace wall



H, J. KERR FURNAGE WALL Jung 3 1930;'

Filed March 4, 1926 5 sheets-sheet.

H. J'. KERR' FURNACE WALL Filed March 4, 1926 6 Sheets-Sheet v A v /NVENTO/e Mum; /Cwm/ A TTOR/VE VS H. J. KERR FURNACE WALL June 3, 1930.

Filed March 4', 41,925 e Smets-Sheety NVENTOR ATTORNEYS H. J; KERRFURNAGE- WALL June 3, 1930.

Filed March 4, 1,926 6 Sheets-Sheet 4 H. J. KERR June 3, 1930,

FURNACE WALL Filed March 4 6 Sheets-Sheet Fig/0*- A INVEA'TOR A TTORNEV5 H. J. KERR 1,761,567

FURNAGE WALL 6 Sheets-Sheet 6 Filed March 4. 1,926

June 3, 1930.

A TTo/e/VE YSA /mmmlmmmm 1N VENTOR` l Patented June 3, 1930 -p UNITED'STATI-:s

` PATENT OFFICE.

OWARD J. KERR, OF WESTFIELD, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS,TO FULLER LEHIGH j COMPANY, A CORPORATION OF DELAWARE FURNACE WALLApplication led March 4, 1926.l Serial No. 92,134.

will be best understood fromthe following description and the annexeddrawings, in which Fig. 1 is a longitudinal section of a 10 typical formof water tube boiler -and its furnace in which I have embodied my invention;` Fig. 2 is a section on the line 2-'2 of Fig. 1 on a largerscale; Figs. 3, 4 and 5 are views of a portion of the wall shown in viewon the line 3 -3 of Fig. 4, Fig. 4 belng a cross-section in plan of Fi3,-Fig. 5 being a section on the line 5 5 o Fig. 4; Figs. 6,

7 and 8 are views similar to Figs. 3, 4 and 5, but showing amodification, Fig.l 6 being a section on the line 6-6 ofFig. 7, Fig. -7being a'section` in plan of Fig. 6, and Fig. 8 belng a section on thevline 8--8 of Fig. 6; Figs. 9, 10 and 1l are views similar to Fi s. 3,4and 5, but showing a modification, Fig. 9 being a section on the line9-9 of Fig. 10

' Fig. 10 being a section 1n plan of Fig. 9 andv Fig. 11 being asectionon the line 11-11 of Fig. l0; Figs. 12, 13 and 14 are viewssimilar to Figs. 3, 4 and 5, but showing still anothermodification,-F1g. 12 being a section on the'line 12-12 of Fig. 13, Fig.13'

being a section in plan of Fig. 12 and Fig. 14 being a section on theline 14-14 of Fl 12. j v

like reference characters indicate like parts in the several views.

In the illustrative embodiment, the steam boiler has water tubes 10, anupper steam and water drum 11 and a furnace chamber 12. Theoil burners13 are supplied with combustion air through ducts 14 from a fan- 15,this air being drawn through ducts 16 upwardly through channels 17-formed between the inner and outer side walls of the furnace chamber,the air entering at the bottom of the wall through the opening 18.

While I have shown myvwall arrangement and the cooling connectionstherefor as applied to the side walls only, it will be under- Fig'. 2 ona still larger scale,y Fig. 3 being'a` a well-known manner. With thearrange- `Similarly 'this arrangement permits the time, to make a'substantially air-tight linstood that, if desired, it maybe applied tothe front and rear walls also. Thefarrangement in eachside wall is thesame as in the otherside wall, so that a'descri tion'ofthe, constructionof one will suiiice or both- Inthe side wall is a row o ffvertical tubes19 having their 'ends bent outwardly vbut connected respectively witli'alower header 2O and an upper'header 21 preferably inclined as shown inFig. 1. The upper header 2l is connected to the drum l1 through a pipev22 in a `Well-known manner and the header 20'is similarly connected tothe Water space of the drum 11 by a Apipe 23, also in ment described,-boiler water is circulated through the tubes 19 to cool the same.

As is usual, the tubes, 19 are protectedby refractory tile and vb ecauseof changes in operating conditions, it is desirable that these tileshall be free to move relatively, and to' that end, it is desirable toomit the bonding between the several tile, and particularly. between theseveral vertical 4rowsof tile. It isalso desirable to make these tile asthin as possible, or at least to provide for the cooling of the tile asclosely adjacent the furnace side of the tile as possible,`so as tomaintain the tile at as nearly a uniform temperature as may be. 80

In the form illustrated in Figs. 3, 4 and 5, each pair of adjacent tubes19 has a vertical row of tile 24 between them with the sides of the tilerecessed to provide a space between each pair of tile 24 for a tube 19.In this form, the tile 24 are made more than usually thin and, atv thesame time, are formed Iso that open joints are vprovided lbetween eachvertical row Aof tile and also between the tubes 19 and the tile. Hencethe tile have a freedom of movement and yet, because the outerportionofthe tile is wider than the space vbetween the tubes 19,-the tile areheld'against removal from'the wall.

tubes 19 to have lateralmoti-on relatively to each other.

In order to close the openings or recesses provided for the tubes 19and, at the same ing for the wall, which lining is particularlydesirable when' air is being forced through the space or c hannel 17between this lining and the outer casing 25, I provide al metallic platelining.

In the arrangement shown in Figs. 3, 4

and 5, this lining is made up of a plurality might ow.

of metallic plates 26, each connected, as by autogenous welding, to .atube 19 at about the middle portion of the plate and with the platesarranged with overlapping edges so that the plates may move withthetubes 19 parallel to the face of the wallwithout openingjoints'between the plates 26. It will be noted thatthe tile are chippedat 26 so as to permit the relative motion between the tile and theplates without interference with the overlapping portions of the plates26. The plates 26 may be made aslong vertically as desired, butpreferably will be made in a number of' lengths placed edge to edge.

In the arrangement shown in Figs. 6, 7 and 8, the tile 27 are madesomewhat thicker than the tile 24 of Fig. 4, but otherwise thearrangement is substantially the same, so far as the tile is concerned.The metallic lining is formed of a plate or plates 28 with their edgesbent to enter the recesses between the tile 27, these edges beingconnected to the tubes 19 so as to provide a bent portion, sothat-,Whenthe tubesA 19 move relatively to each other, these-bentportions will permit such movement, the metal of the plates 28 beingthin and flexible for this purpose. It will .be obvious -that by thisarrangement, the relative motions of the tubes 19 will simply cause theplates 28 to bend. without opening up any cracks through vwhich air fromthe channel 17 In the form shown in Figs'. 9, 10 and 11, the arrangementis somewhat like that of Figs. 6, 7 and 8 and also like that of Figs.'

3,4 and 5. The lining is formed of a plurality of plates 29 placed edgeto edge and with their edges fastened, as by autogenous welding, to thetubes 19. A fold or rib 30 is formed between the vertical edges of eachplate and the plates themselves are relatively thin and flexible.VConsequently, when the tubes 19 move relatively to each other parallelto' the face of the wall,-they are not prevented from doing so .by thelplates 29 because of the possible bending of the fold 30.' The tile 3lmay be provided with a projection 32 eXtendin into this fold, though, ifdesired, this projection may by the springing of the projecting portions34. In this modification, the wall lining plates are not attached to thetubes 19 and they must therefore be held in position. T o

that end, I have provided a number of I- beams 36 positioned in thechannel 17 and extending from the plates 33 to the casing 25. Thesebeams 36 may be divided up into sectionsV so as to permit the air toflow vertically in the channel 17 and, if desired, the beams 36 may bemade of skeleton form to permit the passage of air vetrically acrossthem.

I claim: Y

1. A furnace wall having a row of spaced tubes, connections to supply acooling medium to said tubes, tile between each pair of adjacent tubesand having recesses for the tubes with the sides of said recesses towardthe inner faces of said tile substantially closed, and a metallic liningcovering the outer face of said wall, said lining comprising a pluralityof plates, each contacting with at least one of said tubes.

2. A furnace wall having a row of spaced tubes, connections to sup ly acooling medium to said tubes, tile letween each pair of adjacent tubesand havin recesses for the tubes with the sides of said recesses towardthe inner faces of said tile substantially closed, and a metallic liningcovering the outer face of said wall, said lining comprising a pluralityof plates, each contacting with at least one ofsaid tubes and therecesses in said tile being large enough to permit small movement of thetile parallel to the face of the wall and closed .suiciently at thefront and rear of each tube to prevent the removal of the tile from thewall in a direction at right-angles ,to theI wall.

3. A furnace wall having a row of spaced tubes, connections to supplyV acooling medium .to said tubes,'tile between each pair of adjacent tubesand having recesses for the tubes with the sides of said recesses towardthe inner faces of said tile substantially closed, and a metallic liningcovering the outer face of said wall, said lining comprising a pluralityof plates, each contacting with at least one of said tubes and connectedthereto, each of said plates being disconnected from, and free to movehorizontally relatively to, the adjacent plates.

4. A furnace wall having a row of spaced tubes, connections to supply acooling medium to said tubes, tile between each pair of adjacent tubesand having recesses for the tubes with the sides of said recesses towardthe' inner faces of said tile substantially closed, and a metalliclining covering the outer face of said wall, said lining comprising aplurality of plates, each contacting a plurality of plates, each platebeing se-- with and connected to at least one of said cured to adjacenttubes and bent to permitk tubes. Y

5. A furnace wallv having a row of spaced tubes, connections to supply acooling medium to said tubes, tile between each pair of adjacent tubesand havin recesses for "the tubes with the sides of sald recessestomovement thereof along said wall.

HOWARD J. KERR.

tially closed, a metallic lining covering the Aouter face of said wall,said lining com-v v prising a pltrality of plates, each contacting withat least one of said tubes, an outer wall spaced from the outer side ofsaid wall, and connections to circulate air through the space betweensaid wall and said outer wall.

6. A'furnace wall having a row of spacedtubes, connections to supply acooling medium to said tubes, tile between each pair of adjacent tubesand having recesses for the tubes with the sides of saidrecesses towardthe inner faces of said tile substantially closed, a metallic lining-covering the outer face of said wall,said lining comprising a-plurality of plates, each contacting with at least one of said tubesand said plates being constructed and arranged 'to permit the tubes tomove relatively to each other parallel to the face of the wall whilemaintaining the lining substantially air tight.

. 7 A furnace wall having a row of spaced tubes, connections to supply acooling niedium to said tubes, tilebetween each` pair of adjacent tubesand having recesses forfthe tubes with the side of said spacestoward-the,

inner faces of said tile substantially closed, and a metallic liningcovering the outer face of said wall, said lining comprising a pluralityof plates, each contacting with and connected to at least one ofsaidtubes and said plates being constructed and-arranged to permit thetubes to move relatively to eaci other parallel to the face of the wallwhile maintaining the lining substantially air tight.

8. A furnace wall having a row of spaced tubes, connections to supply acooling medium to said tubes, tile between each pair of adjacent tubesand having recessesA for the tubes with the sides'ofvsaid recesses toyward the inner faces of said tile substantially closed, and a metalliclining covering the outer face of said wall, said lining comprising aplurality of relatively thin, flexible plates, each connected to atleast two l of said tubes and having a bent portion between the pointsof connection to permit the tubes to move relatively to each other paryallel to. the face vof the wall while maintaining the liningsubstantially air tight.

9. A furnace wall formed of refractory material and having recessestherein opening toward the outer face thereof, tubes dis

